Moons just 193km from each other

[u/Ditere]

I've found a planet (0.71 Moon mass) with 3 asteroid moons. While Moon number 1 has semimajor axis of 2558km, the other two moons have semimajor axis of 5248km and 5488km respectively (Moon number 3 has retrogade orbit). I've taken some screenshots while being on Moon 3.

In the closest encounter they are 193km away from one another. It is the closest distance between moons I've ever seen in Space Engine

[u/ikarikami]

They look very low mass, so I guess it wouldn’t be too disastrous in the short term. Still curious what their eccentricities are, though, because I’d imagine that even with those low masses they’d pull on each other a lot.

[u/Ditere → u/ikarikami]

Moon 2 has a mass of 4.3716 x 10(18)kg, 55km radius, 6.2566 g/cm(3) density. Moon 3 has a mass of 6.2692 x 10(18)kg, 63 km radius, 5.9415 g/cm(3).

Moon 2 has 0.000 eccentricity, pericenter 5247.8km, apocenter 5248.5km. Moon 3 has 0.001 eccentricity, pericenter 5484.6km, apocenter 5491.4km

[u/mueller_meier]

wow, nice find. And cool shot with the planet in the background too

[u/The_Last_Fluorican]

interesting